// Copyright(C) 2023 InfiniFlow, Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

export module infinity_core:multi_doc_iterator;

import :index_defines;
import :doc_iterator;
import :term_doc_iterator;

namespace infinity {
export class MultiDocIterator : public DocIterator {
public:
    explicit MultiDocIterator(std::vector<std::unique_ptr<DocIterator>> &&children) : children_(std::move(children)) {}

    const std::vector<std::unique_ptr<DocIterator>> &GetChildren() { return children_; }

    void PrintTree(std::ostream &os, const std::string &prefix, bool is_final) const override;

protected:
    std::vector<std::unique_ptr<DocIterator>> children_;
};
} // namespace infinity